Theory of universe
- Theory of universe creation
- Theory of universe expansion
- Theory of universe origin
- Theory of universe beginning
- Theory of universe expanding
- Theory of parallel universe
- Theory of multiple universes
- Pulsating theory of universe
- Oscillating theory of universe
- Inflation theory of universe
- String theory of universe
- Theory of infinite universes
- Cyclic theory of universe
- Theory of alternate universes
- Inflationary theory of universe